Mechanical movement.



A. G. SCHROEDER.

MECHANICAL MOVEMENT. APPLICATION FILED NOV-17.11913.

Patented July 27,1915.

0 M w m w ANDREW Gr.-SCHROEDER, OF MILTON, WASHINGTON.

MECHANICAL MOVEMENT.

Application filed November 17, 1913.

To all whom it may concern:

Be .it known that I, ANDREW G. Sermonnnn, a citizen of the UnitedStates, residing at the town of Milton, in the county of Pierce andState of Washington, have invented certain new and useful Improve mentsin Mechanical Movements, of which the following is a specification.

My invention pertains to improvements in mechanical movements whereby arotary motion is converted into a reciprocating motion and vice versa.

The objectsvof my invention are, first, to convert a high speed rotarymotion into a powerful reciprocating motion that may be used to operateforce pumps, drag saws and other mechanisms where a direct oroscillating reciprocating motion is required; second to convert apowerful directreciproeating motion into a high speed rotary motion forvarious uses; and third to make it possible to omit the guidesindeveloping a rotary motion from a direct reciprocating movement andvice versa. I attain these objects by means of the mechanism illustratedin the accompanying drawings in whichr Figure 1 is a front sideelevation of one form of the mechanism and Fig. 2 is atop view of thesame. Fig. 3 is a view of the reverse side of the mechanism; Fig. 1 afront side view similar to Fig. 1 showing the travel of the crank orvwrist pin as the mechanism operates.

My invention comprises a system of gears mounted on a shaft 1 suitablymounted in described. This cross arm 6 need not be confined to the formshown, but may be a disk plate to carry the gears 4 and 5. The

. gear 4: is loosely mounted on a front-stem or stud 8 fixed into thecross arm or disk 6 and turns thereon. This gear 4 has a crank arm 9rigidly fixed thereon. A pinion gear Specification of Letters Patent.

Patented July 27, 1915.

Serial No. 801,389.

loosely mounted a gear 12. To gear 12 is fixeda plate 13 to which apiston rod or other reciprocating shaft is designed to be gear 12 andintermeshing therewith causes pinion 10 to so control gear 12 as tocause bolts 1414 to stay in line with the center of the wrist pin 11 andthe shaft 1. The

length of the crank 9 and the combined action of the several gears issuch that when shaft 1 and gear 3 mounted thereon is turned, the wristpin 11 will travel back and forth in a straight line across the centerof shaft 1 as indicated in Fig. 1.

When the shaft 1 is mounted in a vertical position and gear 3 is therebyturned in a horizontal plane, my mechanism as thus far described willoperate perfectly. The shaft 1 being driven by a power operating thebelt and pulley 17 will revolve gear 3 which intermeshing with 4 willnot only cause the latter to turn but will cause the cross arm or disktorevolve around shaft 1 and the wrist pin 11 to travel in a straightline back and forth across the center of shaft 1. The gear 3 beingone-half the size of gear 4-, will make five revolutions to one forwardand back motion of wrist pin 11. Gear 3 may be driven at a high speedand a slower and more powerful reciprocating motion be obtained inthewrist pin ll. The plate 13 being fastened to the reciprocating shaft tobe attached thereto will travel forth and back in a direct line withoutguides over the center of shaft 1. The reverse action can be obtained byapplying a powerful reciprocating motion to the wrist pin 11 byattaching a piston rod or other reciprocating power shaft thereto. Thepin 11 will travel forth and back without guides over the center line ofshaft 1 and causegear 41 to turn on and revolve with the cross arm ordisk 6 around gear 3 and develop a higher speed in the shaft 1.

When the shaft 1 is mounted in a hori zontal position and the gear 3 isrevolved in a vertical plane, the weight of the gear 4; and the crank 9and the operating gears thereon will cause oscillation that will greatlyinterfere with its operation. To overcome this oscillation theoppositely mounted gear 5 has been added to counterbalance gear 4, andon gear 5 is fixed a weight 18 mounted relatively opposite the crank 9so as to counterbalance it and the operating gears thereon. Theseoppositely added weights cause the mechanism to revolve smoothly withoutperceptible oscillation. lVith the improved mechanism thus balanced inconstruction, the piston or reciprocating shaft attached to the wristpin 11 will operate the mechanism with a smooth rotary movement. hen theoperation is reversed by applying the power to the revolving shaft 1,the mechanism is revolved and the reciprocating piston or shaft isdriven with equal smoothness.

In order to shift or fix the line of the reciprocating motion acombination of gears will be required in some uses of my invention.These are shown on the rear side of the cross arm or disk 6. The pinion19 is fixed on the end of the rear stud or stem on which is mounted gear5 and turns with it.

Gear 20 is mounted on a sleeve 21 which eninsure its being pivotallycentered on shaft 1. This gear 20 may be fixed to the bearing 2 by meansof bolts 242 lso as to be stationary or be fixed to a governing leverarm for fixing or shifting the position of the reciprocating line ofaction. The idler pinion 22 located between and intermeshing with 19 and20, controls the position of the reciprocating line of travel. This ispractically set forth in my application for an improvement in cross cutsaws filed November 6, 1913, Serial Number 799,420. After the mechanismis put into operation the control is not required and these gears runidly and free from strain.

My invention is designed to be variously utilized in a variety of useswhere it is desirable to dispense with reciprocating connecting rods. Itmay be used in producing long reciprocating motions developing thehighest percentage of power uniformly throughout its operation. Thismakes it especially useful in operating force and well pumps,

other forms of mechanical movements have been devised wherebyreciprocating movement in a right line is produced. My invention is animprovement over other forms in that I have an evenly balanced mechanismthat will operate without oscillation. Other mechanisms are designed tohave the crank arm or disk to revolve around a fixed gear or sprocketwhile my invention is operated by a central gear which, when driven,causes the accompanying mechanism to revolve around it, This novelsystem of operation not only develops greater power in the movements butadmits of changing the proportions of the gears so as to develop anydesired power or speed. These are features of my invention that do notappear to be anticipated in former mechanisms of this character.

It is to be observed that the several members of the mechanism can be sovaried in size and proportion to each other as to secure any desiredmultiple of revolutions between shaft 1 and the oscillations of thewrist pin 11. I therefore do not limit my invention to dimensions andproportions but reserve the right to so vary the same as to best meetconditions and requirements.

It is to be observed the cross arm or disk may be varied so as to becomea wheel on which the revolving reciprocating mechanism is carried, and Ireserve the right to so vary and use the same in the construction of myinvention as to best meet requirements.

Having described my invention, what I claim as new and desire to secureby Letters Patent is 1. A mechanical. movement comprising a centraloperating shaft and gear, a sleeve mounted cross arm or disk to revolveon said central shaft, two equal sized gears oppositely mounted on saidcross arm or disk and intermeshing with said central gear, a fixedpinion on the front stem of one of said 0ppositely mounted gears, acrank fixed to the same said oppositely mounted gear, a wrist pin onsaid crank, a loosely mounted gear with fixed wrist pin plate on saidwrist pin, a loosely mounted idler pinion intermeshed with said fixedpinion and loosely mounted wrist pin gear, a counter weight on the otherof said oppositely mounted gears so mounted as to counterbalance thecrank on the first mentioned oppositely mounted gear and preventoscillation, a fixed pinion on the rear stem of said other oppositelymounted gear, a loosely mounted idler pinion intermeshed therewith and agear meshing with said last named pinion centrally mounted about thesleeve of the said cross arm or disk, said last named gear being'fixedin such manner as to locate the direction of the line of travel of saidwrist pin in its reciprocating movement as decentral shaft, two equalsized gears oppositely mounted on said cross arm or disk, and eachintermeshed with said central operating gear, a fixed pinion on thefront stem of one of said oppositely mounted gears, a fixed crank on thesame said oppositely mounted gear, a wrist pin on said crank, a looselymounted gear' with fixed wrist pin plate on said wrist pin, a looselymounted idler pinion intermeshed with said fixed pinion and looselymounted wrist pin gear, a counterweight on the other of said oppositelymounted gears so mounted as to counterbalance the crank on the firstmentioned oppositely mounted gear and prevent oscillation, a fixedpinion on the rear stem of said other oppositely mounted gear, a looselymounted idler pinion intermeshed therewith and a gear meshing with saidlast named pinion centrally mounted about the sleeve of the said crossarm or disk, as set forth and described, each of said equal sizedoppositely mounted gears so differing from the size of the first namedcentral operating gear that the said central operating gear will make amultiple of revolutions to develop one complete reciprocating motion ofsaid wrist pin.

8. A mechanical movement comprising two equal sized gears, an operatingwrist pin and crank, said crank fixed to one of said two equal sizedgears, a central shaft and gear, said two equal sized gears oppositelymounted and meshing with said central gear, a cross arm or disk sleevemounted on said central shaft, said cross arm or disk having said equalsized gears mounted thereon; a gear with wrist pin plate fixed thereonloosely mounted on said wrist pin, and a loosely mounted idler pinioninter-, meshed therewith, a pinion meshing with said intermediate gearfixed on the front stem of the first mentioned of the oppositely mountedgears, a counterweight on the other of said equal sized oppositelymounted gears so mounted as to counterbalance said crank on the firstmentioned gear and prevent oscillation, a fixed pinion on the rear stemof said other oppositely mounted gear, a loosely mounted idler pinionintermeshed therewith and a gear meshing with said last named pinioncentrally mounted on the sleeve of the said cross arm or disk about theshaft of the first named central gear as described, and said two equalsized oppositely mounted gears so differing in size from the first namedcentral gear that one complete reciprocating motion of the said wristpin will develop a multiple of revolutions in said first named centralgear and shaft ascrank fixed on the front face of said one of theoppositely mounted gears, a wrist pin on said crank, a loosely mountedgear on said wrist pin, a wrist pin plate fixed thereto, a looselymounted idler pinion intermeshed therewith and with the said fixed stempinion, the other of the two said equal sized oppositely mounted gearshaving a fixed stem loosely mounted on the said cross arm or disk, afixed pinion on the rear end of the said fixed stem of the said otheroppositely mounted gear, a loosely mounted idler pinion intermeshedtherewith and meshing with the last named pinion, a gear fixed andsleeve mounted about the said central shaft and back of and on thesleeve of said cross arm or disk, and a counterweight on the said otherof the oppositely mounted gears so mounted as to counterbalance thecrank on the first named of the two oppositely mounted gears and preventoscillation when said mechanical movement is operated by its saidcentral shaft or by its said wrist pin as set forth and described.

In testimony whereof I affix my signature in presence of two witnesses.

ANDREWV Gr. SCHROEDER.

Witnesses:

L. H. HIGGINS, I. H. HILL.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents. Washington, D. G.

